<template>
  <div class="app-container">
    <!-- 搜索框 -->
    <div style="margin-top: 15px">
      <el-input
        v-model="input"
        placeholder="请输入要添加的分类，左边选择该分类的等级"
        class="input-with-select blogAddInput"
      >
        <el-select slot="prepend" v-model="select" placeholder="请选择">
          <el-option label="1" value="1" />
          <el-option label="2" value="2" />
          <el-option label="3" value="3" />
          <el-option label="4" value="4" />
          <el-option label="5" value="5" />
        </el-select>
      </el-input>
      <el-button
        type="primary"
        style="margin-left: 10px"
        @click="addBlogTypeHandle"
      >添加</el-button>
    </div>
    <!-- 表格 -->
    <el-table :data="data" style="width: 100%" border>
      <el-table-column prop="date" label="序号" width="60" align="center">
        <template slot-scope="scope">{{ scope.$index + 1 }}</template>
      </el-table-column>
      <el-table-column prop="title" label="博客类别" align="center">
        <template slot-scope="scope">{{ scope.row.name }}</template>
      </el-table-column>

      <el-table-column prop="title" label="文章数量" align="center">
        <template slot-scope="scope">{{ scope.row.articleCount }}</template>
      </el-table-column>

      <el-table-column label="操作" align="center" width="150">
        <template slot-scope="scope">
          <!-- 编辑按钮 -->
          <el-tooltip
            class="item"
            effect="dark"
            content="编辑"
            placement="top"
            :hide-after="2000"
          >
            <el-button
              type="primary"
              icon="el-icon-edit"
              circle
              size="mini"
              @click="editBlogTypeHandle(scope.row)"
            />
          </el-tooltip>

          <!-- 删除按钮 -->
          <el-tooltip
            class="item"
            effect="dark"
            content="删除"
            placement="top"
            :hide-after="2000"
          >
            <el-button
              type="danger"
              icon="el-icon-delete"
              circle
              size="mini"
              @click="deleteBlogTypeHandle(scope.row)"
            />
          </el-tooltip>
        </template>
      </el-table-column>
    </el-table>
    <!-- 编辑文章分类 -->
    <el-dialog title="编辑文章分类" :visible.sync="dialogFormVisible">
      <el-form :model="form">
        <el-form-item label="分类名称">
          <el-input v-model="form.name" />
        </el-form-item>
        <el-form-item label="排序等级">
          <el-select v-model="form.order" placeholder="分类等级">
            <el-option label="1" value="1" />
            <el-option label="2" value="2" />
            <el-option label="3" value="3" />
            <el-option label="4" value="4" />
            <el-option label="5" value="5" />
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="confirmEditBlogTypeHandle"
        >确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import {
  getBlogType,
  addBlogType,
  delBlogType,
  findOneBlogType,
  updateOneBlogType
} from '@/api/blogType.js'
export default {
  data() {
    return {
      input: '',
      select: '1',
      listLoading: false,
      data: [],
      dialogFormVisible : false,
      form : {
        name : '',
        order : ''
      }
    }
  },
  created() {
    this.fetchData()
  },
  methods: {
    fetchData() {
      this.listLoading = true
      getBlogType().then((res) => {
        this.listLoading = false
        this.data = res.data
      })
    },
    // 添加文章分类
    addBlogTypeHandle() {
      if (this.input) {
        addBlogType({ name: this.input, order: this.select }).then(() => {
          this.fetchData()
          this.$message.success('添加分类成功')
        })
      } else {
        this.$message.error('分类名称不能为空')
      }
    },
    // 编辑文章分类
    editBlogTypeHandle({ id }) {
      // 1. 回填到表单    2. 打开 dialog
      findOneBlogType(id).then(res => {
        this.form = res.data
        this.dialogFormVisible = true
      })
    },
    // 确认编辑文章分类
    confirmEditBlogTypeHandle() {
      updateOneBlogType({
        id : this.form.id,
        data : this.form
      }).then(() => {
        this.fetchData()
        this.$message.success('更新分类信息成功')
        this.dialogFormVisible = false
      })
    },
    // 删除文章分类
    deleteBlogTypeHandle({ id }) {
      this.$confirm(
        '删除该分类后，该分类下面的所有文章将变为未分类状态，是否继续?',
        '是否删除此文章分类',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      )
        .then(() => {
          delBlogType(id).then(() => {
            this.fetchData()
            this.$message.success('删除成功')
          })
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          })
        })
    }
  }
}
</script>

<style lang="scss" scoped>
.blogAddInput {
  width: 400px;
  margin-bottom: 20px;
}
</style>
